2008 AMA Supersport Champion Ben Bostrom was the fastest rider Friday morning during the AMA Pro Racing tire test at Daytona International Speedway. Within his first seven laps on his factory YZF-R6, Bostrom lapped the 3.51-mile road course in a time of 1:50.630. Bostrom said his biggest hurdle was not adjusting to the full, double-banking course, which he had not run for several years, but was re-acclimating himself to the harder, lower-grip Daytona tires. The Daytona SportBike machines do not go back out until 6:00 p.m. local time, when they will have their first night practice under the lights. American Superbikes are on the track right now at Daytona. AMA Pro Racing Tire Test Daytona International Speedway Daytona Beach, Florida December 5, 2008 Daytona SportBike Provisional Test Times (all on Dunlop tires, as supplied by AMA Pro Racing and teams): 1. Ben Bostrom (Yam YZF-R6), 1:50.630 2. Martin Cardenas (Suz GSX-R600), 1:51.012 3. Jake Zemke (Hon CBR600RR), 1:52.214 4. Josh Hayes (Yam YZF-R6), 1:52.284 5. Cory West (Suz GSX-R600), 1:52.337 6. Josh Herrin (Yam YZF-R6), 1:52.9 7. Shawn Higbee (Buell 1125R), 1:53.205 8. Michael Barnes (Buell 1125R), 1:53.26 9. Tommy Aquino (Yam YZF-R6), 1:53.7 10. Blake Young (Suz GSX-R600), 1:53.729 11. Chris Peris (Hon CBR600RR), 1:55.164